... specific capacity and voltage. The products are mainly used in power system, like power plant, hydropower station, substation equipment, and other DC venues ... -signaling, tele-control, tele-regulation and unattended operation in power system ClassificationAccording to system capacity: 38AH, 50AH, 65AH, 100AH, 120AH, 150AH, 200AH, 300AH ...